Aw, hate to say this but taking it during the day is so dangerous, you could hurt yourself, you could hurt other people, people you love, shoot, you could end up in prison, you do not want that, talk about anxiety. I had a shiver of nausea pass through me just typing that.
There are other drugs for anxiety. Have you tried them all? Have you quit coffee, tried calming tea, camomile, meditation, yoga, all that stuff?
You could do other things: throw things, break dishes, go bowling, go to axe-throwing places, learn to do that, learn how to use a bow and arrow, do that, legally. Get rid of the extra adrenaline of anxiety, sleep the sleep of a physically elated but exhausted person. Arouse your happy hormones, your endorphins.
If you're having trouble sleeping try reading something like War and Peace out loud to yourself. Turn off your television, your phone, your tablets. Block outer noise with quiet headphones, or ear plugs, or balls of tissue. Lower the lights. Listen to soft peaceful music when you try to sleep, keep the volume very very low.
Best of luck trying to stop yourself from taking Ambien during the day and getting some sleep.
Thank you for your post. It makes perfect sense. However, I am 81 yrs. old and I am a double amputee and barely leave my bedroom. I sleep well with Ambien. In fact, I have stopped taking it during the day and I feel fine. I can't do all those things you recommend.. My dr. prescribed an anxiety med but, it gave me body tremors. All the best to you and thank you.